High-Z Particle Cosmic-Ray Exposure of Apollo 8-14 Astronauts.
Technical rept. Nov 61-Dec 71,
SAN FRANCISCO UNIV CALIF DEPT OF PHYSICS
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On Apollo missions that individual astronauts high Z particle exposure was measured by means of Lexan foils located in the passive dosimetry packs carried on the chest, thigh, and ankle of each astronaut. The report deals with measurements obtained on Apollo flights 8-14. Data is presented on the high Z track fluences, the stopping particle densities, and the particle integral LET spectra. The LET spectra, in turn, are used to calculate the fractional cell loss, FCL, of the human kidney Tl cells arising from the high Z particle exposure. The measurements, on subsequent missions, show a consistent and a significant increase in the observed high Z particle exposure. Author